Voltage-current conversion circuit

Details Voltage-current conversion circuit Voltage-current conversion circuit

1991-12-10

1992-11-17

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

330149, H03F 132

Patent

active

051646811

ABSTRACT:
A voltage-current conversion circuit comprises a transistor (Q1) on the input side whose emitter is employed as the input terminal (IN), and a transistor (Q2) on the output side whose base is connected to the base of the transistor (Q1), and the collector current and the emitter current of the transistor (Q1) on the input side are made equal to the collector current of the transistor (Q2) on the output side with the aid of current mirrors circuits (1 and 2). Hence, the transistors on the input and output sides are equal in base-emitter voltage to each other, and the non-linear distortion is therefore eliminated. In addition, the inflow or outflow of current from the input voltage source is zeroed, so that a high input impedance is obtained.

REFERENCES:
patent: 4380740 (1983-04-01), Kaplan
patent: 4814724 (1989-03-01), Tanigawa
patent: 5057792 (1991-10-01), Gay
Fabre, A., Dual Translinear Voltage/Current Converter, Electronics Letters, Nov. 24, 1983, pp. 1030, 1031.

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